Feeding mechanism for stitching-machines.



M55555.- WM/ D. REISER. FEEDING MECHANISM FOR STITGHING MACHINES.APPLICATION FILED DEO.10, 1908.

1,086,084. Patented Feb. 3, 1914,

6 SHEETS-SHEET 1.

- I I [ZZU'EZZfflJT V JM D. REISER. FEEDING MECHANISM FOR STITOHINGMACHINES.

APPLICATION FILED DEO.10', 1908. 1,086,084, v Patented Feb. 3, 1914.

5 SHEETSSHEET 2.

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- D. REI SER. FEEDING MECHANISM FOR STITGHING MACHINES.

AIILIGATION FILED DEC. 10, 1908.

Patented Feb. 3, 1914.

5 SHEETS-SHEET 3.

D. ERIEER. FEEDING MECHANISM FOR STITOHING MACHINES.

APPLIUATION I'ILED DEC. 10, 1908. 1 86,084. Patented Feb. 3, 1914.

D. REISER. FEEDING MECHANISM FOR STITGHING MACHINES.

' APPLIOATION FILED no. 10, 1908. 1,086,084. Patented Feb. 3, 1914.

5 SHEBTS-SHEBT 5.

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FEEDING MECHANISM FOR STITCHING-MAGHINES.

Specification of LettersPatent.

To all whom it may concern Be it known that I, DANIEL REisER, a citizenof the United States, residing at Cleveland, in the county of Cuyahogaand State of Ohio, have invented a certain new and useful Improvement inFeeding Mechanisms for Stitching-Machines, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings.

This invention relates tomachines which are employed to stitch togetherthe leaves and paper covers of books, as in the case of pamphlets,catalogues, etc.

The objects of the invention are to provide machines of this characterwith feeding means for supplying the assembled leaves and covers to astitching mechanism; to combine, with such feedin means, means forautomatically securing t e proper relation between the leaves andbetween such leaves and the cover of each book at the time when thebooks are subjected to the action of the stitching mechanism; to providemeans for automatically stopping at predetermined intervals the travelof each book to subject it a plurality of times to the action of thestitching mechanism; to provide automatically operating means wherebythe stitches taken in books will be we cessively staggered to permit theproper stacking of such books; and to provide for automatically ejectingthe stitched books from the feeding and stitching machine to stack thesame.

VVith the above and other objects in view, the invention may be definedas consisting generally of the combinations of elements embodied in theclaims hereto annexed and illustrated in thedrawings forming a parthereof, wherein Figure 1 represents a front. elevation of a mac ineconstructed in accordance with my invention Fig. 2 represents an endelevation of such machine; Fig. 3 represents a top plan view of theaforesaid machine; Fig. 4 reprethe levers which are employed to arrestthe travel of the unfinished book along the saddle, the saddle beingrepresented in section; Fig. 5repi'esents a detail in plan of theejecting mechanism; Fig. 6

represents a deta showing the associated represents an corresponding tothe 1 FFICE.

DANIEL REISER, OF CLEVELAND, OHIO, ASSIGNOR TO J. B. SAVAGE,OFCLEVELAND,

Patented Feb. 3, 1914.. Application filed December 10'; 1908. Serial No.486,756.

il of one end of the saddle,

enlarged belts or tapes; Fig.

sectional detail ine 77 of Fig.

s a sectional detail correline- 88 of Fig. 7

Fig. 9

represents a sectional detail corresponding to the line 9 9 sents asimilar vi line 10-40 of F perspective view and Fig. 12 rep of one ofthe lev 11 carrying out my invention chine disclosed h machine providedwit a clutch and pulley f in operation at wil books, eonve the erably ofleathe side of the sadd said belts oper shaft, a plurality 0 stops orabutment periodically into books to aline the 1 devices, automatica arearranged to. subject each book determined number of times to the of Fig.5

Fig. 10 repreew corresponding to the 1g. 1; Fig.

11 represents a of the cam shaft and cams. resents a perspective viewers which operates to aline the leaves and covers of the books.

in the maerein, I employ a stitching h an operating shaft, or placingsuch shaft a support or saddle for yer belts consisting prefr tapesmounted on each driving mechanism for ated from the aforesaid.

f automatically operated 5 adapted to be brought the path of travel ofthe eaves and covers. moving lly operating stops which tion of thestitching mechanism, means forautomatically varying in successive booksthe points at which they shall be stitched, cally operating ejector forand an automati discharging the fi rier to stack the same.

Describing the aforesaid the machine comprises a cure characters,

frame having 'a 0 standards 2. suitable shape nished books from thecarparts by referentral standard 1 and'end These standards will be of toaccommodate the frame and mechanism supported thereby and are mounted ona base 3. "The frame comprises a rear longitudinal longitudinally exten5, the members 4 and the aforesaid sta ndards.

member 4 and a front ding support or saddle 5 being supported by 6denotes the shaft which operates the stitch-applying mechanism. providedwith a pullev 7 th of which it may be rotated.

This shaft is ereon, by means there subjected to the action of thestitchingmechanism proper ,to unite the leaves and covers to form books.

The mechanism comprised b elements 6 to 11 inclusive is old and welknown in the art and requires no further illustration or description.

The saddle 5 is substantially the shape of an inverted V, as will appearmore particularly by reference to Figs. 4 and 7. This saddle forms asupport for the books while the same are being carried to and beyond thestitching mechanism and to the ejector after the stitching operation,the apex of the saddle receiving the middle portions of the open books.This saddle constitutes a part of the book-feeding mechanism, which willnow be described. The shaft 6 is provided with a grooved pulley 12 atthe rear end thereof for the reception of the belt 13 which, aspreviously stated, is preferably of leather tape. A pair of similar butsmaller pulleys 14 and 15 are mounted below'the pulley 12, preferablybeing carried by a shaft 16 supported by the bracket 17 projectingrearwardly from the'standard 1.

18 and 19 denote a pair of pulleys similar to pulleys 14 and 15 andsupported by a forwardly-projecting bracket 20 carried by standard 1.Above the pulleys 18 and 19 are located a pair of pulleys 21 and 22havof saddle 5, shaft ing' their axes below the saddle 5 and at rightangles to the direction of said saddle.

23 and 24 denote pulleys located at opposite ends of saddle 5 andadjacent the rear thereof, said pulleys having their upper sur facesprojecting abovelsaid saddle and their lower surfaces below said saddle.Pulle s 23 and 24 are mounted respectively on sha ts 25 and 26 which arelocated at opposite ends 26 being mounted in a journal box 27 which isadjustable up and down and toward and from the saddle 5 by means of abolt 28 extending through a strap 29 and into said, journal box, saidbolt being provided with'a wing nut 30. The front ends of shafts 25 and26 are provided respectively with pulleys 31 and 32 for the reception ofa second belt 33, pulleys 31 and 32 being located in the same mannerwith respect to the front of saddle 5, as pulleys 23 and 24 are mountedwith respect to the rear portion of said saddle. The belt 13 constitutesa feed belt, as well asv a drive belt, for the belt 33, the former beltextending around the pulleys 14, 18, 21, 23, 24, 22,

- 1.9, 15 and 12, while belt 33 extends around pulleys 31 and 32.

As the saddle 5 extends directly beneath the stitching mechanism, itwill be apparent that, in the construction described thus far, booksplaced on the saddle with their inner leaves resting on the belts 13 and33 will be carried past and in operative relation to the stitchingmechanism. As it is an easy matter for the relative positions of theleaves and of the leaves and covers to be altered, I have provided themachine with automatically-operating alining devices which are adaptedto present the books to the stitching mechanism with thecovers andleaves properly alined. For this purpose I employ a plurality of levers,each having means adapted to engage the books, and a cam shafthavingcams thereon for operating said levers to bring the engagingdevices thereof into and out of the pathof travel of the books on thesaddle.

34 denotes the cam shaft, the same being shown as extending from end toend of the machine and provided with a bevel pinion 35 thereon meshingwith a similar pinion 36 on a shaft 37. Shaft 37 is driven from shaft 6by means of a pinion 38 on shaft 6 meshing with a gear 39 on shaft 37.The gear 39 and pinion 38 are so proportioned, in the embodiment shownherein, that shaft 6 will make four revolutions to one of shaft 37 andshaft 34. The cam shaft 34 is provided on the feed side of the machine(that'is to say, the side from which books are conveyed toward thestitching mechanism) with a plurality of cams 40, 41, 42 and 43, and onthe delivery or discharge side with a plurality of cams44, 45, 46, 47and 115.

49 denotes a short shaft located near the feed end of the rear framemember 4 and having thereon a lever 50, said lever extendin over the cam40 and being provided at its ront end with a book-engaging member 51.The shaft 49 extends through bosses 52 formed on the frame 4 andconstituting bearings for said shaft. The shaft is provided at one endwitha stop nut 53 and at its opposite end with a nut 54 between whichand the adjacent bearing 52 there is interposed a spring 55 whichnormally holds shaft 49 in the position shown in Fig. 3 of the drawings,with the cam 40.

Levers 56, 57 and 58 are preferably mounted on a common shaft 59supported from the frame member 4, said levers overhanging respectivelythe cams 41, 42 and43. Each of the levers 50, 56, 57 and 58 isprovidedwith a roller 50", 56, 57, and 58, respectively, engaging thesubjacent surfaces of the correspondin cams. Each of these cams isprovided with a recess whereby its lever may be dropped to bringlthebook-engaging member carried at t e front end thereof into the path oftravel of a book on the saddle 5,'said cams and the relative arthe leveroverhanging rangement of the recesses thereof being shown in detail inFig. 11. Lever 56 is provided with a book-engaging member 60 which.cooperates with member 51 in the manner to be described hereinafter. Inaddition to roller 50, the lever 50 carries a second roller 50", theaxisof which extends downwardly as shown in detail in Fig. 12, said rollerbeingadapted to engage a cam 61 carried by cam shaft 34 and convenientlyformed as part of the cam 40, to move the lever 50 toward the lever 56.

At the outer end of lever 57 there is carried a yoke 62 which supports ashaft 63 on which are rigidly mounted a pair of frustoconical rollers64, said rollers having their bases presented outwardly and beingsubstantially parallel with the opposite surfaces of the saddle andforming, with such saddle, a passageway for the books in their transitto the stitching mechanism. These rollers form in effect a single rollerand each is provided with projections 65 which are" adapted to engagethe cover of the-book thercbeneath for the purpose of feeding the samebodily along the leaves thereunder and, in conjunction with the stop 90,to secure a final alinement of the leaves and cover before-subjectingthe book to the action of the stitching mechanism.

Shaft 63 is provided with a gear 67 meshing with a gear 68 on a shaft69, which shaft is provided at its inner end with a friction disk 70driven by a friction disk 71 on shaft 34. The shaft 69 is also providedwith a .pulley 72 havinga belt 72 thereon driving a shaft 73 by means ofa pulley 74. Shaft 73 in turn drives a feed disk 74 which projectsthrough the saddle 5 beneath the rollers 64 and gives to the leaves ofthe books a final adjustment before the book reaches the stitchingmechanism. The disk 74 is driven from shaft 73 by means of pulleys 75and 76 and a belt 77, and the yoke 62 is pivoted on the outer end ofshaft 69. The cams 40, 41, 42, and 43 are each rovided with a recesswhich will allow the evers corresponding thereto to drop and bring theirrespective engaging devices into the path of travel of the books. Thisrecess in the form shown herein, occupies about one-quarter of thecircumference of each cam and the cam. 61 will be so arranged as tooperate lever 50 when the roller 50 is in the recess of cam 40.

78, 79, 80 and 81 denote levers which are preferably mounted on a commonshaft 82, said shaft being mounted in bearings 83 carried by the rearframe member 4 and having its ends projecting beyond said bearings. Atone end the shaft is provided with a. nut 84 and a spring 85 betweensaid nut and the adjacent bearing and tending to move the shaft. and thelevers thereon bodily to the right. 'At its opposite .vance of thelifting of lever and the shaft is provided with an arm 86 sleevedthereon and provided with a roller, 87 intermediate of the ends thereofadapted to be engaged by a cam 88. The outer end of the arm 86 ispivotally supported at 89 on the stud on which the cam is sleeved.

Each of the levers 78, 79, 80 and 81 has at its outer end of abook-engaging member 90, 91, 92 and 93, respectively, similar. to themember 51. As W1ll a pear more particularly from Figs. 1 and 3, theseengagin members are substantially equi-distant and correspond to therelative positions which each book will occupy while being stitched. Thecams 44,45, 46, and 47 are similar to the earns 41, 42 and 43 andoperate their respective levers in the same manner as the latter cams.The recesses in cams 44 to 47 inclusive are located about 90 degreesapart, as shown in Fig. 11, so that lever 79 will be dropped to brin itsmember91 into operative relation witE a book slightly in ad- 78, andlever 80 will, in like manner, be dropped slightly before lever 79 islifted, and so on for the series of cams.

At its delivery end, the machine is provided with a delivery or ejectormechanism for discharging therefrom and stacking the books which havebeen stitched. This mechanism comprises generally'a pair of drumslocated above the saddle, a belt coacting with said drums and a bladeadapted to be projected through the ridge of the saddle to bring thebooks thereon between the belt and one of the drums to cause the books.to be delivered laterally with respectto the direction of travelimparted thereto by the belts 13 and 33 with means for automaticallyoperating said blade at predetermined intervals.

Near the delivery end of the machine, a pair of frames 94 are provided,said frames being supported by a base 95 which in turn is carried by abracket 96 on the end standard 2. Each of the frames 94 is generallysemicircular in outline and incloses the saddle 5 and each is providedon the front portion thereof with a standard 97.

98 denotes a roller which is journaled in the standards 97, -and.99 and100 denote shafts which are journaled in the upper portions of theframes 94 on opposite sides of the central portion of the saddle 5:Shafts 99 and 100 are provided with gears 101, 102 respectively, saidgears intermeshing whereby one of said shafts may be' driven from theother and the shaft 100 is driven by means of a chain 103 extendingaround a sprocket 104 on shaft 100 and around a sprocket 105 carried ona stub shaft 106 which in turn is driven from shaft 34 by means of gears107 and 108 located on shafts 106 and 34 respectively. The shafts 99 and100 are provided with for belts enlargements constituting in efiectdrums 109. Three such belts are shown and each is arranged asillustrated more particularly in Fig. 10, whei'ein the belt is shown asextending around roller 98, drum enlargement on shaft 100 and over. thetop of drum enlargement on shaft 99, the latter shaft being so locatedas to bight the belt in its passage from shaft 100 to shaft 98.

It will be noted that the lower portions of belts 109 clear the uppersurface of the saddle 5 and, in order to deliver the books to the actionof the belts and cofiperating drums, I have rovided the followingstruction. 110 enotes a blade which 1s carried by arms 111 and 112.These arms extend through the base plate 95, and arm 111 is connected tothe outer end of the bent lever 48 by means of a in 113 on said armfitting. in a slot 114 in t he. end of the lever. Lever 48 is providedwith a roller 48 resting on top of the cam 115. This cam is providedwith an elevation 116 which is adapted to engage roller 48 and therebyelevate the lever 48 and the arm 111 connected thereto. For the purposeof operating arm 112 I connect to each of the arms 111 and 112 theupperend of a toggle 117, the lower end of each toggle being connectedto the base plate 95 and said toggles having their knuckles connected bymeans of a link 118. It will be apparent that, by operating the arm 111,corresponding movement will be transmitted to the arm 112 by means ofthe toggles 117 and the link connecting the same. The cam 88 is carriedby a gear 119 sleeved on a stub shaft 120 journaled in the rear framemember 4, gear 119 being driven by gear 108 on the end of shaft 34. Thefront end of lever 86 is pivoted to ears forming an extension of stubshaft 120.

With the parts arranged as described, the operation Wlll be as follows:By depressing the treadle 8 the pulley 7 is connected up to the shaft 6and the motion of this shaft is transmitted to the cam shaft 34 and tothe leather tape belts 13 and 33, all of which parts operate with acontinuous and uniform movement durin the depression of said treadle.The boo (catalo es, pamphlets, etc.,) are placed on the sa dle 5 withthe middle leaves resting on said saddle and 'on the belts 13 and 33,with the backs of the books presented upwardly. As applied to thesaddle, the.leaves are stacked upon one another with the cover restingon to of the uppermost leaf. The recesses on t e cams 40, 41, 42 and 43are so arranged that the front end of a book will be engaged'by themember 60 on lever 56 before it can pass thereunder, As soon as the bookis so engaged, the member 51 will be moved toward the member 60 by theaction of the cam 61 u .on the downwardly projecting roller 50 of thelever 50. The book is thus subjected to two forces tending to aline theleaves and the cover, namely, the belts 13 and 33 acting on theinnermost leaf to carry the same toward the stitchin mechanism and themember 51 acting in the same direction upon the cover. Further rotationof shaft 34 elevates .levers 50 and 56 and permits the book to traveltoward the stitching mecha- While thus engaged and before the firststitch is taken lever 57 drops and the rollers 64 engage the cover ofthe book. Subjected to the combined action of belts 13 and 33, disk 74and rollers 64, the leaves and cover are given a final alinement beforethe first stitch is taken. Levers 57 and 7 8 are then elevated by theircams and the book is carried forward by the belts until its front endengages member 91. Here the second stitch is taken. Lever 79 is thenelevated and the book travels forward until its front end abuts againstmember 92. In this position the third stitch is taken. Lever 80 is thenelevated by its cam 46 and the book is carried forward by its beltsuntil it abuts against the member 93, where the fourth and last stitchis taken. Where four stitches are taken, four cams 44, 45, 46 and 47will be provided, each cam having its recess arrangedat an angle ofabout 90 degrees with respect to that of its preceding cam, and, toinsure that the levers will drop in time to interrupt the books, therecess in each cam of the series 4547 is given a slight overlap in therecess in its preceding cam in the series. cam 47, the book is carriedbeneath the ejector. When in proper position beneath the ejector, thecam 115 elevates the lever 48, projects the blade 110- through the. slotin the saddle ridge and brings the middle of the back of the stitchedbook between the lower surfaces of belts 109 and the drums on the shaft99, thereby delivering the book laterally from the machine. 5

It will be observed that the gear 119 is driven by the pinion 108 andthat the high portion of cam 88 is about 180 degrees in extent. With theapparatus arranged to make four stitches in each book, the relativesizes of the gear and pinion will be such as to produce one revolutionof gear 119 for two revolutions of shaft 34. It follows that, after onerevolution of shaft 34, the cam 88 will shift the shaft 82longitudinally and bring the rollers on levers 44 to 47 inclusive on theopposite sides of their respective hen lever 81 is elevated by.

..of three, four,

cams from that occupied before, with the result that the stitches nextformed in a book will be out of alinement with the stitches formed inthe preceding book. At the end of this revolution of the shaft 34, theroller 87 will roll ofi .the high portion of'the cam 88 and the spring85 will restore the shaft 82 and the levers thereon to the positionshown in the drawings. The result will be that the stitches taken inadjacent books will be out of alinement when the books are stacked, thuseconomizing by the books in shipment.

In the operation of the machine, the catalogues, pamphlets, etc., arefed along in gangs of two or more book lengths, and these gangs, afterstitching, are-cut into appropriate book lengths. Each book enerallyhastwo stitches or fasteners app ied thereto and the machine shown hereinis adapted to handle gangs of two books or pamphlets each, and each bookwill have two stitches or fasteners therein. By in? creasing the numberof stops, and cams and increasing the speed of the cam shaft, gangs fiveor more books can be fed through the machine and each book be given atleast two stitches or fasteners.

By the term book employed in the claims hereto annexed I do not proposeto exclude a gang, which may subsequently be divided into a plurality ofindividual books or pamphlets.

Having what I claim is:

1. In a book-stitching machine, the combination, with stitchingmechanism, of a support of inverted V-shape arranged in proximity tosaid stitching mechanism, belts ocated at opposite sides of saidsupport,

space occupied and means for continuously and uniformlydriving saidbelts.

2. In a book stitching machine, the combination with book-stitchingmechanism, of book feeding mechanism comprising an elongated V-shapedsaddle arranged with its apex upward and belts, one on each side ofbination,

said saddle between of, said belts frictionall leaf on the saddle, andsaid belts.

' 3. In a book-stitching machine the comwith stitching mechanism, of asupport constructed to hold the books back upward in open condition,belts cooperating with said support and arranged to engage the innerleaves of the books'to feed-the same along said support, an alining stopfor the ends of the leaves and book cover, a coyer-engaging device,means for moving said device toward said stop, and means for engagingthe same means for driving moving said stop and device into and out ofthe path said support.

of travel of the books along 4. In a book-stitching machine the comthusdescribed my invention,-

- rollers, and means for the apex and base therebination, with stitchingmechanism, of a hoe ceding means arranged to feed the books in opencondition to said mechanism, an alining stop for'the ends of the leavesand book cover, a cover-engaging device, means for moving said devicetoward said stop, and means for moving said stop and device into and outof the path of travel of the books.

5. In a book-stitching machine the combination, with book-stitchingmechanism, of a rigid support therebeneath arranged to support the booksin open condition with their backs upward, means engaging the innerleaf. of a book for feeding the book along said support, a lever havin astop arranged to engage the forward en s of the book leaves and cover, asecond lever, a back-engaging device carried thereby, cams engaging saidlevers to move the same into and out of the path of movement of thebooks on said support, a cam arranged to.

move the second lever toward the first mentioned lever, and a spring formoving the second lever in the opposite direction.

6. In a book-stitching machine, the combination, with stitchingmechanism, of a continuously and uniformly moving means for feeding tosaid mechanism the assembled unstitched leaves and covers of books, andmeans for automatically alining a plurality of times the leaves andcover of each book prior to subjecting the same to the stitchingmechanism.

7. In a book-stitching machine, the combination, with stitchingmechanism, ofan inverted V-sha ed saddle extending to sald mechanism, aelt located on each side of said saddle, means for driving said belts,and means for alining the leaves and cover of a book prior 0 subjectingthe same to the stitching-mechanism, the last mentioned means comprisinga stop arranged to engage the forward edges of theleaves and cover,tapered rollers arranged to engage the cover on the'back thereof, meansfor drivmg said movin said stop and out of the pat of movement 8. Thecombination, with a rigid book support, of a pair of feed belts assocated therewith and arranged to receive the inner leaves of booksthereon, a stop or abutment for engaging the forward ends of the leavesand cover of a book, and a rotary device conforming in shape to theshape of the support andarranged to. engage the outer leaf or cover of abook.

9. The combination, with a rigid book support of substantially invertedV-shape,

rollers into and =-of a book.

a feed belt on each side of said support and 1 arranged to receive theinner leaves of books thereon, a stop or abutment for engaging the.forward ends of the leaves and cover of a book, a rotary deviceconforming in shape to the shape of the support and arranged to engagethe outer leaf or cover of a book, and a feed device projecting abovethe highest portion of said support and arranged to engage the centralportion of the innermost leaf of a book.

10. In a book-stitching machine, the combination, with stitchingmechanism, of a support of inverted V-shape, a belt on each side of saidsupport and extending longitudinally thereof, means for driving 881dbelt, a stop or abutment, means for bringing the same into and out ofoperative relation to said support and belt, feeding mechanismcomprising a roller corresponding in contour to the contour of thesupport, means for driving said roller, and means for moving said rollerinto and out of operative relation with respect to said support.

11. In a book-stitching machine, the com bination, with stitchinmechanism, of a support of inverted V-s ape, a belt on each side ofsaidsup ort and extending longitudinally there means for driving saidbelt, a stop or abutment, means for bringing the same into and out ofoperative relation to said support and belt, a roller corresponding incontour tov the contour of the support. means for driving said roller,means for moving said roller into and out ot operative relation withrespect to said support, a disk projecting throughsaid support, andmeans for rotating said disk.

12. In a book-stitching machine the combination, with stitchingmechanism, of a continuously and uniformly moving means for feedingbooks to and past said mechanism, sto s for arresting the travel ofbooks past sai mechanism, means for moving said stops toward and fromsaid feeding means, and means for shifting said stops toward and fromsaid stitching mechanism so as to locate the stitches in differentportions of successive books. i I

13. In a book-stitching machine the combination,with stitchingmechanism, of means for feeding books to and nism, stops arranged tosuccessively arrest the travel of books past said mechanism, and meansfor moving said stops in succession toward and from said feeding means.-

14. In a book-stitching machine, the combination, with stitchingmechanism, of means for feeding books to and past said mechanism, aplurality of levers each having a stop arranged to arrest the travel ofa book past the stitching mechanism, and a cam shaft having thereon aplurality of cams arranged to engage said levers and operate the samesuccessively.

15. In a book-stitching machine, the combination, with stitchingmechanism, of means for feeding books to and past said mechanism, aseries of stops arranged to successively arrest the progress of each,book to past said mecha-' apeaoaa I subject the same a plurality oftimes to the action of the stitching mechanism, andmeans forautomatically shifting the positions of said stops with respect tosuccessive books.

16. In a book-stitching machine, the com bination, with stitchingmechanism, of means for feeding books to and past said mecha nism, meansfor arresting a plurality of times the travel of each book past saidmechanism to cause a plurality of stitches to be taken in the same, andmeans whereby the stitches taken in successive books will be staggered.

17. In a book-stitching machine, the combination, with stitchingmechanism, of a book support extending to and past said mechanism, beltsassociated with ,said support, a plurality of levers mounted on a commonshaft and each having a stop arranged to engage and arrest the movementof the book by the belts, a cam shaft, and cams on said shaft arrangedto engage said levers and operate the same successively.

18. In a book-stitching machine, the combination, with stitchingmechanism, of a book support extending to and past said mechanism, apair of belts associated with said support, a shaft, levers mounted onsaid shaft and each having a device arranged to arrest the travel of abook past the stitching mechanism, a cam shaft having cams thereonarranged to engage said levers and oper-,

for

ate the same successively, and means imparting longitudinal movement tothe lever shaft.

19. In a machine for the purpose set forth, the combination,

with stitching mechanism,

of means for feeding books to said stitching I mechanism, means forinterrupting the travel of each book to subject it to the action of saidstitchingcmechanism, and means for varying the position of theinterrupting means with respect to successive books.

20. In a machine for the purpose set forth, the combination, withstitching mechanism, of means for feeding books to said stitchingmechanism, means rupting the travel of each .book to subject it aplurality of times to the action of said stitching mechanism, and meansfor varying the position of the interrupting means with respect tosuccessive books.

21. In a machine for the .urpose specified, the combination, withstitching mechanism, of a support, means for feeding books along saidsupport and in operative relation to said mechanism, a plurality oflevers each having a stop device arranged to be brought into the path oftravel of books along said support, means for operating said levers tobring said devices successively into action, and means for shifting theposition of'each lever longitudinally with respect to successive books.Y

22. In a machine for the purpose specified,

for successively interthe combination, with stitching mechanism, toshift the positions of the levers thereon of a support extending to saidmechanism, a with respect to successive books. 10 shaft, a plurality oflevers upon said shaft In testimony whereof, I hereunto afiix my andeach havin a device arranged to engage signature in the presence of twowitnesses.

' and interrupt the travel of a book along said DANIEL REISER.

support, means for moving said levers suc- Witnesses: cessively towardand from said support, and J. B. HULL, means for automatically movingsaid shaft BRENNAN B. WEST.

